500M tokens for $4: hands-on with DeepSeek V4.1 Flash inside Claude Code, 9 prompts released
AlchainHust · x · 2026-10-18
花叔 stress-tested DeepSeek-V4.1-Flash-1017 by wiring it into Claude Code via DeepSeek's official Anthropic-compatible endpoint: launch keynote, motion-graphics video, Monument Valley puzzle level, KV-cache explainer animation, 3D Forbidden City, and more—10+ cases costing just ¥28 for 500M tokens and 2,000+ API calls.
Verdict: aside from subscribed Claude Code/Codex, it's likely the cheapest capable option right now; aesthetics and long-horizon tasks still trail Opus 5.5, but with good skills it ships solid results.
Key setup details from the packet:
- A ds shell function in /.zshrc points ANTHROPICBASEURL at DeepSeek's Anthropic-compatible API, with all three Opus/Sonnet/Haiku slots mapped to deepseek-flash—otherwise subagent calls get remapped to pricier v4-pro
- Off-peak pricing is half; web search/fetch is free until Nov 2026, then ¥5/1,000 calls
- With skills like huashu-design/huashu-motion, each case costs only ¥1.5-2
- All 9 prompts and per-case costs are published for repro
More from coding & agent
- Indie hacker makes $8,000 in two weeks with SEO, releases OpenSEO × Claude Code tutorial — yihui_indie · 2026-10-18
- How developers are handling long-term agent memory: Mem0, Zep, or DIY — Efficient_Joke3384 · 2026-10-18
- Indie maker's fully AI-agent-run YouTube channel notches first video past 1K views — tibo_maker · 2026-10-18
- Luma adds Send to Luma inside Claude Motion, turning animated explainers into real video projects — lmoroney · 2026-10-18
- Small businesses don't need agents: define the workflow first, pick the tool second — DavidLinthicum · 2026-10-18
- grill-me: Matt Pocock's open-source Claude Skill that grills your design decisions — paulabartabajo_ · 2026-10-18